Title:
CONTROL DEVICE FOR ELECTRIC VACUUM CLEANER
Document Type and Number:
Japanese Patent JP3146881
Kind Code:
B2
Abstract:
PURPOSE: To prevent the life of a motor from reducing due to heating, improve the durability of a brush, and in addition, control the input power at a high precision.
CONSTITUTION: A motor 2, a bidirectional thyristor 3 for motor driving, a phase-control circuit 5 and a temperature-detecting means 8 to detect the temperature of the motor 2 are provided. Then, a phase-control device of the phase- control circuit 5 is changed in response to the output of the temperature- detecting means 8.
Inventors:
Hiroo Ohshima
Masaru Moro
Akihiro Kitagawa
Mitsuhide Sugibayashi
Masakazu Fukushima
Masaru Moro
Akihiro Kitagawa
Mitsuhide Sugibayashi
Masakazu Fukushima
Application Number:
JP24379694A
Publication Date:
March 19, 2001
Filing Date:
October 07, 1994
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
A47L9/00; A47L9/28; H02M1/00; (IPC1-7): A47L9/00; H02M1/00
Domestic Patent References:
| JP4343827A | ||||
| JP595877A | ||||
| JP690883A | ||||
| JP4197229A | ||||
| JP3297432A | ||||
| JP4193147A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)